The medieval aqueduct of Salerno was built in the ninth century to supply water to the monastery of St. Benedict, at the eastern walls. It is located in the historic center of Salerno, under the hill Bonadies and its Arechi Castle.
It consists of two branches: one coming from the hills to the north, the other one from the high ground to the east of the city; both rejoined along the street Arce (which by their arches is named), at an edge of the old city walls. At first only stocked the Benedictine monastery, and later, a branch underground allowed to supply the convent of Piantanova, Via Mercanti.
The aqueduct was popularly renamed 'Bridges of the Devil' and it was said that it was built in a single night, with the help of demons, by the magician of the twelfth century Peter Barliario. The popular superstition considered also that venture under the arches between dusk and dawn would bring to the meeting with devils or evil spirits.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.